OpenMC/tests/regression_tests/plot/plots.xml

<?xml version="1.0"?>
<plots>

  <plot id="1" basis="xy">
    <origin>0. 0. 0.</origin>
    <width>25 25</width>
    <pixels>200 200</pixels>
    <color id="1" rgb="255 0 0" /> <!-- Red -->
    <meshlines meshtype="entropy" linewidth="0" />
  </plot>

  <plot id="2" basis="xz">
    <origin>0. 0. 0.</origin>
    <width>25 25</width>
    <pixels>200 200</pixels>
    <mask components="1 3" background="255 255 255" />
  </plot>

  <plot id="3" basis="yz" color_by="material">
    <origin>0. 0. 0.</origin>
    <width>25 25</width>
    <pixels>200 200</pixels>
    <background>0 0 0</background>
  </plot>

  <plot id="4" type="voxel">
    <pixels>100 100 10</pixels>
    <origin>0. 0. 0.</origin>
    <width>20 20 10</width>
  </plot>

</plots>